^dmmodorca-s is closely allied to the Gazelles, but differs from
them in having an elongated neck and also a long tail. *A.
clarkei, the only species, is limited to Soxiialiland.
Lithocrani-us, not unlike the last, has a still longer neck*
which makes it almost Giraffe-like ; its tail, however, is short.
The scientific name is derived from the " solid stony character of
the cranium." In running, this Gazelle carries the head forward
in a straight line with the body. It is African.
Dwrcotracfiis with one species, I), inegalotis* is a pigmy Gazelle
restricted to Somaliiaud. Its likeness, on account of size and in
some other superficial features, to the Klipspringer, led to its
original confusion with that genus (Oreotragas,.
A sub-family Hippotraginae, or Hippotragine section^, includes
162.—Sable Antelope. Hipp&traffus lugw- x ^
figured hAve not mewly reached their J
The horns oi
a number of Antelopes which agree in the possession of four
mammae, and of molars more like those of the true Oxen, of